Rock said:
Setting for Optimize for performance turns on write caching. How much
performance gain you get will depend on what you do. Test it to find out.
It might not be noticeable. If that is set you must use the Safely remove
option otherwise removing too soon could result in data loss and possibly
data corruption.
JustUs (& Rock):
As a matter of course we generally initially advise all our users to at set
their USB external HDD to the "Optimize for quick removal" option under the
Policies tab for that device in Device Manager > Disk drives listing.
Presumably one's USB external device is being used for one or two purposes,
i.e., storage and/or backup. Based on some tests we performed with a variety
of USB external HDDs we found no performance difference with those devices
regardless of whether the "Optimize for quick removal" option was selected
or the "Optimize for performance" option was selected. So we've opted for
(usually) for setting the option to the "...quick removal" one so that the
user ordinarily need not invoke the "Safely Remove Hardware" icon in the
notification area.
But JustUs, do this...
As we frequently recommend to users all the time...
Don't rely on my advice or anyone else's in these kinds of situations where
you can easily determine what's best for you. Try backing up substantial
amounts of data - if that's what you're about - and test the time it takes
to do so using both types of options. Determine if there's any significant
performance advantage using one or the other option.
Anna